Accumulator



FIG. 1 is a perspective view of an accumulator showing my new design;

FIG. 2 is a right side elevational view showing the design for the accumulator of FIG. 1;

FIG. 3 is a left side elevational view showing the design for the accumulator of FIG. 1;

FIG. 4 is a front elevational view showing the design for the accumulator of FIG. 1;

FIG. 5 is a rear elevational view showing the design for the accumulator of FIG. 1;

FIG. 6 is a top plan view showing the design for the accumulator of FIG. 1; and,

FIG. 7 is a bottom plan view showing the design for the accumulator of FIG. 1.

The broken lines shown in the drawings illustrate portions of the accumulator that form no part of the claimed design. 

CLAIM The ornamental design for an accumulator, as shown and described. 